Wire-straightener



(No Model.) v v H.BORGHARDT.

WIRE S-TRAIGHTENER. No. 299,615.- Patented June a. 1884.

UNITED STATES PATENT OFFICE.

I HUGO BORCHARDT, OF BRIDGEPORT, CONNECTICUT.

WI RE-STRAIGHTENER.

SPECIFICATION forming part pf Letters Patent No. 299,615, dated June 3,1884.

Application filed November 15, 1883. (N0 model.)

To all whom it may concern:

Be it known that I, HUGO BORCHARDT, a citizen of the United States,residing at Bridgeport,, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inWire-Straighteners; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and usethesame.

My invention relates to wire-working, and has for its object to producea straightener which shall be simple in construction and economical incost, and which shall possess all the advantages of the best rotarystraighteners now in use without having their correspondingdisadvantages. The objections to the rotary straighteners now in use aretheir tendency to mark the surface of the wire, and also the fact thatit is impossible to straighten shaped wire with them.

In the straighteners now in common use the wire is passed through aseries of dies or between bearing-surfaces adjustably arranged in aframe which is mounted in any suitable manner, and to which rapidrotation is imparted, the dies or bearing points being so adjusted inthe frame that the wire in pass ing through is forced out of line withthe axis of the frame in all directions, each portion of the wire as itpasses through the frame being deflected in various directions, so thatit passes through with a spiral motion and comes out thoroughlystraightened, but often badly marked by the surfaces of the dies as theyare rapidly rotated about it. With my improved device I am enabled tostraighten round or shaped wire or light metal tubing without making theslightest mark upon the surface of the wire, or without injury to thetubing when used for that purpose. My invention consists in a series ofstationary rolls,which bear upon the surface of the wire at differentand constant angles.

For the purpose of enabling others to understand and use my improveddevice,I will proceed to describe the same, referring by letters to theaccompanying drawing, which is an isometrical view of the whole device.

A A are a series of rolls journaled in the ends of sliding pins B B.These pins slide in sockets O C, and are secured in position afteradjustment by set-screws D, or in any convenient manner. Any number ofpins and rollers may be used, the essential principle of my inventionbeing that they shall bear upon the wire at different .anglesthat is tosay, each roll acts on the surface of the wire in a plane at an acuteangleto the plane of the adjacent rolls. The arrangement shown in thedrawing is deemed preferable to any other.

E E are two heavy metallic rings or plates, through which the wirepasses in entering and leaving the device, and between which extends asingle strip or bar, F, in which arethe sockets C C. This strip makes apartial turn spirally about an imaginary center, the position of whichis clearly indicated in the drawing by the wire II. It follows thereforethat the sockets, and of course the pins, are not parallel, but they allpoint at different angles toward the center.

It should be understood that the rolls are not an essential feature ofmy invention, it being well understood that for certain classes of workthe rolls may as well, if not better, be omitted, the ends of the pinswhich come in contact with the wire being slightly grooved. I have shownand described my device as provided with rolls as I ordinarily usethem;but I make no claim either to their use or omission in awire-straightener, as they have been used with and without rolls formany years.

' More than one side strip may be used, if desired; but one will befound amply sufficient. Where but one sidestrip is used, as in thedrawing, it is necessary that the wire, when the device is in use,should be passed alternately over and under the rolls. When two sidestrips are used, the wire passes between the twoseries of rolls. 7

' In the drawing I have shown the wire as running straight throughbetween the'rolls. In practice, however, the rolls are so adjusted thattheir bearing-surfaces are not in exactly a straight line; but thebearingsurfaces of the successive rolls are arranged alternately onopposite sides of the center, so that the wire as it is drawn throughbetween the rolls is given a slightly serpentine motion. I

As stated above, the side strip, F, makes a partial turn about thecenter of the device, so that no two of the rollers act on the wire inthe same plane.

I have shown the rollers as having faces curved inward, which enables asingle set of rolls to act on any sized round wire. \Vhen it is desired,however, to straighten shaped wire, special rolls are required, whichare provided with grooves corresponding in shape with the wire.

Having thus described my invention, I clai1n 1. In adevieefol-straightening wire, aseries of stationary rolls arranged in spiralform, and acting on alternate sides of the wire, whereby the surfaceisacted on from all directions.

2. In adevice forstraightening wire, a series of rolls journaled in theends of pins, which are capable of adjustment in sockets arranged inspiral form, whereby each roll is caused to act 3 HUGO BORCHARDT.

\Vitnesses:

K. B. PORTER, A. M. lVoosTER.

